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[Post New]14 Mar 2007 17:33:13 IST
    Subject: RADIOACTIVITY
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nunoxic (1469)

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Olaaa!! Perrrfect answer. 227  [394 rates]
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4 Days HalfLife
16 Days Active
Half Lives Complete = 16/4
=4

Thus The Amount Left Will Be 1/2^4
=1/16

(C)

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